package alp.starcode.nudtportal.framework.util;

import javax.crypto.*;
import javax.crypto.spec.SecretKeySpec;
import java.io.UnsupportedEncodingException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;

public class ZYQREncrypt {

    private static final String Key_ALGORITHM = "DESede";
    private static final String CHIP_ALGORITHM = "DESede/ECB/NoPadding";

    private final static int crc16tab[] = {0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7, 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c,
            0xd1ad, 0xe1ce, 0xf1ef, 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6, 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c,
            0xf3ff, 0xe3de, 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485, 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac,
            0xd58d, 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4, 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
            0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823, 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b, 0x5af5,
            0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12, 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a, 0x6ca6, 0x7c87,
            0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41, 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49, 0x7e97, 0x6eb6, 0x5ed5,
            0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70, 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78, 0x9188, 0x81a9, 0xb1ca, 0xa1eb,
            0xd10c, 0xc12d, 0xf14e, 0xe16f, 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067, 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d,
            0xd31c, 0xe37f, 0xf35e, 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256, 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f,
            0xd52c, 0xc50d, 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405, 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d,
            0xd73c, 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634, 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
            0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3, 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a, 0x4a75,
            0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92, 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9, 0x7c26, 0x6c07,
            0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1, 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8, 0x6e17, 0x7e36, 0x4e55,
            0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0};

    public static byte[] getKey(int clientID, int agentID) {
        byte[] key = new byte[16];
        key[0] = (byte) (agentID & 0xff);
        key[1] = (byte) (clientID & 0xff);
        key[2] = (byte) ((clientID >> 8) & 0xff);
        key[3] = 0;
        for (int i = 4; i < 8; i++) {
            key[i] = (byte) (~key[i - 4]);
        }
        for (int i = 8; i < 12; i++) {
            key[i] = (byte) (key[i - 8] ^ key[key.length - i - 1]);
        }
        key[12] = (byte) (key[8] ^ 0xa1);
        key[13] = (byte) (key[9] ^ 0x1b);
        key[14] = (byte) (key[10] ^ 0xc1);
        key[15] = (byte) (key[11] ^ 0x1d);
        byte[] newKey = new byte[24];
        System.arraycopy(key, 0, newKey, 0, 16);
        System.arraycopy(key, 0, newKey, 16, 8);
        return newKey;
    }

    public static byte[] getKey(byte[] GuestID) {
        byte[] key = new byte[16];
        key[0] = GuestID[0];
        key[1] = GuestID[1];
        key[2] = GuestID[2];
        key[3] = 0;
        for (int i = 4; i < 8; i++) {
            key[i] = (byte) (~key[i - 4]);
        }
        for (int i = 8; i < 12; i++) {
            key[i] = (byte) (key[i - 8] ^ key[key.length - i - 1]);
        }
        key[12] = (byte) (key[8] ^ 0xa1);
        key[13] = (byte) (key[9] ^ 0x1b);
        key[14] = (byte) (key[10] ^ 0xc1);
        key[15] = (byte) (key[11] ^ 0x1d);
        byte[] newKey = new byte[24];
        System.arraycopy(key, 0, newKey, 0, 16);
        System.arraycopy(key, 0, newKey, 16, 8);
        return newKey;
    }

    // ECB妯″紡鏃犲～鍏?DES鍔犲瘑
    public static String QR3DesEncrypt(byte[] key, byte[] data) {
        try {
            // 鐢熸垚瀵嗛挜
            SecretKey deskey = new SecretKeySpec(key, Key_ALGORITHM);
            // 鍔犲瘑
            Cipher c1 = Cipher.getInstance(CHIP_ALGORITHM);
            c1.init(Cipher.ENCRYPT_MODE, deskey);
            return byte2HexString(c1.doFinal(padData(data)));// 鍦ㄥ崟涓?柟闈㈢殑鍔犲瘑鎴栬В瀵?
        } catch (NoSuchAlgorithmException e) {
        } catch (InvalidKeyException e) {
        } catch (NoSuchPaddingException e) {
        } catch (BadPaddingException e) {
        } catch (IllegalBlockSizeException e) {
        }
        return null;
    }

    public static byte[] QR3DesDecrypt(byte[] key, String data) {
        try {
            // 鐢熸垚瀵嗛挜
            SecretKey deskey = new SecretKeySpec(key, Key_ALGORITHM);
            // 瑙ｅ瘑
            Cipher c1 = Cipher.getInstance(CHIP_ALGORITHM);
            c1.init(Cipher.DECRYPT_MODE, deskey);
            return c1.doFinal(hexString2Byte(data));
        } catch (NoSuchAlgorithmException e) {
        } catch (NoSuchPaddingException e) {
        } catch (BadPaddingException e) {
        } catch (IllegalBlockSizeException e) {
        } catch (InvalidKeyException e) {
        }
        return null;
    }

    // byte鏁扮粍杞崄鍏繘鍒跺瓧绗︿覆
    private static String byte2HexString(byte[] data) {
        String hs = "";
        String stmp;
        for (byte d : data) {
            stmp = (Integer.toHexString(d & 0XFF));
            if (stmp.length() == 1) {
                hs = hs + "0" + stmp;
            } else {
                hs = hs + stmp;
            }
        }
        return hs.toUpperCase();
    }

    // 16杩涘埗瀛楃涓茶浆byte鏁扮粍
    private static byte[] hexString2Byte(String hexString) {
        byte[] data = new byte[hexString.length() / 2];
        int len = hexString.length();
        for (int i = 0; i < len; i += 2) {
            String hex = hexString.substring(i, i + 2);
            data[i / 2] = (byte) Integer.parseInt(hex, 16);
        }
        return data;
    }

    private static byte[] padData(byte[] data) {
        int moreLen = 8 - data.length % 8;
        byte[] paddedData = new byte[data.length + moreLen];
        System.arraycopy(data, 0, paddedData, 0, data.length);
        for (int i = 0; i < moreLen; i++) {
            paddedData[data.length + i] = 0x00;
        }
        return paddedData;
    }

    public static int crc16(byte[] buf, int len) {
        int crc16 = 0;
        for (int counter = 0; counter < len; counter++) {
            crc16 = (crc16 << 8) ^ crc16tab[((crc16 >> 8) ^ buf[counter]) & 0x00FF];
        }
        return crc16 & 0xFFFF;
    }

    private static final String SPLIT = ",";
    private static final String CHARSET = "GB2312";

    /**
     * 获取支付码
     *
     * @param version
     * @param type
     * @param agentId
     * @param clientId
     * @param accNum
     * @param cardSid
     * @param accName
     * @param perCode
     * @param recNum
     * @param cardAccNum
     * @param epId
     * @return
     */
    public static String getQrCode(Integer version, Integer type, Integer agentId, Integer clientId, Integer accNum, String cardSid, String accName,
                                   String perCode, Integer recNum, Integer cardAccNum, Integer epId) {
        StringBuilder qrDataSB = new StringBuilder();
        qrDataSB.append(version).append(SPLIT);
        qrDataSB.append(type).append(SPLIT);
        qrDataSB.append(agentId).append(SPLIT);
        qrDataSB.append(clientId).append(SPLIT);
        qrDataSB.append(accNum).append(SPLIT);
        qrDataSB.append(cardSid).append(SPLIT);
        qrDataSB.append(accName).append(SPLIT);
        qrDataSB.append(perCode).append(SPLIT);
        qrDataSB.append(recNum).append(SPLIT);
        qrDataSB.append(cardAccNum).append(SPLIT);
        qrDataSB.append(System.currentTimeMillis() / 1000).append(SPLIT);
        qrDataSB.append(epId).append(SPLIT);

        byte[] key = ZYQREncrypt.getKey(clientId, agentId);
        String des;
        String qrCode = null;
        try {
            des = ZYQREncrypt.QR3DesEncrypt(key, qrDataSB.toString().getBytes(CHARSET));
            qrCode = des + SPLIT + ZYQREncrypt.crc16(des.getBytes(CHARSET), des.length());
        } catch (UnsupportedEncodingException e) {
        }
        return qrCode;
    }

    public static String[] parseQrCode(String qrCode, int[] arr) {
        //crc16鏍￠獙,鏍￠獙閫氳繃涓烘槗閫氱殑浜岀淮鐮侊紝鍚﹀垯灏变涪缁欒仛鍚堟敮浠?
        String[] qrcode = qrCode.split(",");
        if (qrcode.length > 1) {
            String crc16_A = qrcode[1];
            try {
                String crc16_B = String.valueOf(ZYQREncrypt.crc16(qrcode[0].getBytes("GB2312"), qrcode[0].length()));
                if (crc16_A.equals(crc16_B)) {
                    return ZYQREncrypt.parseQrCode(qrCode, arr[0], arr[1]);
                }
            } catch (UnsupportedEncodingException e) {
            }
        }
        return null;
    }

    public static String[] parseQrCode(String qrCode, Integer agentId, Integer clientId) {
        String[] d = null;
        if (-1 == qrCode.indexOf("code=")) {
            d = qrCode.split(SPLIT);
        } else {
            d = qrCode.split("code=")[1].split(SPLIT);
        }
        byte[] aaa = ZYQREncrypt.QR3DesDecrypt(ZYQREncrypt.getKey(clientId, agentId), d[0]);
        String qrData = null;
        try {
            qrData = new String(aaa, "GB2312").trim();
        } catch (UnsupportedEncodingException e) {
        }
        String[] qrDataArr = qrData.split(SPLIT);
        String[] retArr = new String[20];
        System.arraycopy(qrDataArr, 0, retArr, 0, qrDataArr.length);
        retArr[19] = d[1];
        return retArr;
    }
}

